Note For Printed Wiring Boards And Schematic Diagrams - Sony HCD-RG88 Service Manual

7-5.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
Q These are omitted.
B E
Q
B C E
These are omitted.
Q
B C E
These are omitted.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1 / W or less unless otherwise
4
specified.
• : internal component.
f
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM/AM)
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G : REC
J : CD PLAY (ANALOG)
c : CD PLAY (DIGITAL OUT)
q : MD/VIDEO (AUDIO) IN
j : GAME IN (AUDIO)
k : GAME IN (VIDEO)
N : MIC INPUT
• Abbreviation
AR : Argentina model
MX : Mexican model
SP : Singapore model
• Circuit Boards Location
MAIN TRANS board
CD OPEN board
CD SWITCH board
PANEL board
PAD SWITCH board
GAME IN board
SENSOR (CD) board
DRIVER board
SW board
HEAD (A) board
27 27
HCD-RG88
SUB-TRANS board
SENSOR board
SUB WOOFER board
TUNER PACK
MAIN board
POWER board
VOL board
MOTOR board
BD board
HEAD (B) board